Pith Number

pith:SCHQFYO4

pith:2019:SCHQFYO4QEITDQ4KC6XG7ESUZT

not attested not anchored not stored refs pending

Optical Variability of TeV Blazars on long time-scales

A. Darriba, Alok C. Gupta, A. Strigachev, E. Semkov, G. Damljanovic, Haritma Gaur, L. A. Sigua, M. G. Nikolashvili, O. M. Kurtanidze, O. Vince, P. J. Wiita, R. Bachev, R. G. Chanishvili, S. Ibryamov, S. O. Kurtanidze

arxiv:1901.10731 v1 · 2019-01-30 · astro-ph.HE

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SCHQFYO4QEITDQ4KC6XG7ESUZT}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-17T23:54:15.076778Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

908f02e1dc811131c38a17ae6f9254ccf197bcdad16b8470cffcbd2df738641b

Aliases

arxiv: 1901.10731 · arxiv_version: 1901.10731v1 · doi: 10.48550/arxiv.1901.10731 · pith_short_12: SCHQFYO4QEIT · pith_short_16: SCHQFYO4QEITDQ4K · pith_short_8: SCHQFYO4

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/SCHQFYO4QEITDQ4KC6XG7ESUZT \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 908f02e1dc811131c38a17ae6f9254ccf197bcdad16b8470cffcbd2df738641b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b24f3e7186113e5b81792a24e3fdee59fc866cc173994893ef448306b00bb67d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2019-01-30T09:54:49Z",
    "title_canon_sha256": "aff716e40420de536ed40485c92218b96901fb60bfbb01583b2b3c69bf26e5af"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.10731",
    "kind": "arxiv",
    "version": 1
  }
}